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Finding the Fourth Proportional to 14,355,931.20, 21,549,643.20 and 8,970,662.40

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Solution

The fourth proportional to 14,355,931.20, 21,549,643.20 and 8,970,662.40 is: 13,465,833.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355,931.20 : 21,549,643.20 = 8,970,662.40 : x
  2. Step 2: Convert to fraction form
    14,355,931.20/21,549,643.20 = 8,970,662.40/x
  3. Step 3: Cross multiply
    14,355,931.20x = 21,549,643.20 × 8,970,662.40
  4. Step 4: Simplify right side
    14,355,931.20x = 193,314,573,987,655.69
  5. Step 5: Solve for x
    x = 193,314,573,987,655.69/14,355,931.20
  6. Step 6: Final answer
    x = 13,465,833.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.